Camera settings and Portsdown stability

[darrenrainer]

Hi all,

I have been having trouble with my power suddenly taking a dive when transmitting on 13cms. I have been using a C920 camera and just swapped over to a Pi cam.On the Pi cam the power is totally stable. On the C920 it runs for about 15secs and then power takes a dive and comes back up. I think it may be a problem with the data rate coming from the C920 camera. Are there any settings for the camera on the Portsdown ? I have tried different SRs and FECs etc but it is still unstable. I am quite happy to just use the Pi but just wondered if there was something I was missing with the C920 setup.

I am using the Lime usb mini and running into a SDLabs 20 amplifier into a dummy load when testing.

Regards

Darren G4VTQ

[G8GKQ]

Hi Darren

Unfortunately, the only source that is really reliable with a LimeSDR is the RPi Camera. The problems were originally reported here viewtopic.php?f=103&t=6070#p19583 and yours seem typical.

I am working on a new build that should perform better.

73

Dave, G8GKQ

[darrenrainer]

Hi Dave,
Thanks for the reply. Now I know it is just the C920 I will stick with the Pi.
73s
Darren